Thermostat device



Feb. 9, 1932. M. H. WARD THERMOSTAT DEVICE Filed Jan. 23, 1929 WWZMQWMATTORNEY v Patented Feb. 9, 1932 MARSHALL H. WAD, OF BROOKLYN, NEW YORKTHERMOSTAT DEVICE Application led January 23, 1929. Serial No. 334.455.

This invention relates to improvements in thermostat devices and isdesigned primarily for controlling temperature of circulating water inthe water-cooling system of an internal combustion engine.

' Such devices have been previously used, but this invention is animprovement thereon, the principal object being the provision of such adevice which is composed of few parts, easy to assemble, cheap tomanufacture, efficient in operation, and having a long life, and whichmay be adjustedduring its :manufacture Y. permanently to operate undercertain predetermined and fixed conditions.

Another object of the invention is the, provision of such a device inwhich a valve is directly and positively operated by means of a metallicbellows, the valve stem having a limited movement, and the guiding meansand stopping means being located within the bellows so as not to besubject to corrosion and reducing obstruction to the free flow of fluidtherethrough.

Other objects will be apparent from a consideration of the followingspecification and the drawings.

To the accomplishment of the foregoing, and suchother objects as mayhereinafter appear, this invention consists in the construction,combination and arrangement of parts hereinafter described and thensought to be defined in the appended claims, reference being` had to theaccompanying drawings 4forming a part hereof and which show 5 merely forthe purpose of illustrative disclosure, the preferred embodiment of myinvention, it being expressly understood, however, that various changesmay be made in the drawings within the scope of the claims withoutdigressing from my inventive idea.

In the drawings, Fig. l represents a vertical longitudinal sectionthrough a device constructed to em body my invention.

Fig. 2 represents an exploded view of the various parts constituting theassembled device, shown in Fig. 1, the metallic. bellows being omitted.Y l The cage or framel is formed of any`suitable material, preferablybrass, and includes a pan or saucer shaped bottom member 2 with sidearms 3 extending upwardly from t-he rim `oredge thereof. These arms areformed or provided with arc shaped extensions 4 at their upper endswhich have the 55 arc-shaped lugs 5 extending upwardly there-` from. Thebottom member 2 is formed or provided with an opening 6 surrounded byacircular extension or flange 7, forming a socket. The bottom member isalso shaped e0 or formed to provide a flattened area or base 8 toreceive and support the open end 9 of the extensile and contractilemember 10, which is securely fastened thereto as by weldv ing, solderingor the like. This member 10 65 is preferably in the form of a thinwalled metallic bellows, as shown.

A`fholding member 11 is mounted within the socket formed by the circularflange 7 and is in the form of an elongated cu or 7" shell having itslower end 12 lclosed an securely fastened Within said socket bysoldering. welding or the like. This holding member 11 extends upwardlywithin the bellows 10, and has its upper end 13 open to slidably 75receive a sleeve or tube 14 which is open at both ends. The holdingmember 11 is provided with slots 15 in its sides which are elongated andare adapted to receive a` pin or pins 16 secured to sleeve 14- andprojecting 80.

radially therefrom. Heads 17 are formed or provided on said pin or pinsso as to overlap the sides of said slots, the pins by en aging in theslots serving as guidlng means orthe sleeve`14 and also being adapted toengage 85 the ends of the slots to limit the movement of the sleeve ineach direction.

The sleeve or tube 14 is internally screwthreaded near its upper end 18to receive the externally screw-threaded lower end 19 of the 90. valvestem 2 0, which is reduced in diameter to form a shoulder 21' to providea bearing face for the upper and closed end 22 of the bellows `10. Thisend 22 of the bellows is apertured, as at23, to fit over the reduced end19 of the valve stems, and this ortion of the bellows is held andtightly c amped between the up er end of sleeve 14 and said shoulder 21.T is joint may also be soldered or welded so as to be fluid tight.

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- 25 valve stem 20, is reduced or lowered to a annular flange 28 formedor provided on the flat ring-shapedv member 29. This ring member restsupon the upper edges of the arcshaped extensions 4 and is provided witharcuate slots 30 to receive the arc-shaped lugs 5 on said extensions 4'.These lugs are rivreted or headed or welded or soldered to hold themember 29 and valve seat 27 firmly in position upon the frame or cage.

lIn assembling, the bellows 4.assembly is first completed and 'a smallquantity of volatile fluid, such as alcohol, for example, is introducedinto the bellows through. the tubular valve stem 20. Then the threadedend 24 of the valve stem is screwed into a fixture andthe air pressurewithin the entire linternal chamber, formed by the bellows 10,

holding member `11, sleeve 14, and hollow predetermined point. Thischamber is then sealed by driving a pin or plug 31 into the end of thetubular valve stem, and solderingv the end of the same therein. The ringmember 29 is then `placed in positionupon the frame or cage 1 andfastened;

The valve 25 is then screwed onto the threaded end 24y of the valve stem20. The entire device is'then placed in a-bath of water heated `to thetemperature at which it is desired that the' bellows shall expandsuiiiciently to cause the valve to just open, when in use. The valve isthen screwed down on the A valve stem and brought into predeterminedrelationto itsseat, andis then penned or' rivetedor otherwise suitablyfastened in ixed adjustment and relation to the valve stem. l e

When in use for controlling the temperature of the'circulating water inthe water cooling system of an internal combustion engine, the valve 25remains seated and shortcircuits the iiow of Awater so that it does notposed of few parts, cheap to manufacture,

easy to assemble, fixed in adjustment, effective in operation andcapable of lengthy and extended use. The guide and stop for theY bellowsand valve are within the sealed b81- 1,s4.4,4se

closed end with side arms extending 'upwardly therefrom, a resilienthollow extensile and contractile member having one end -secured to saidclosed end of the frame, a

valve seat member positioned upon and secured to the upper ends of saidside arms, a valve adapted to lit said seat, a valve stem connected tosaid valve and to the other end of said resilient extensilemember, andmeans within sand resilient extensile'member for guiding and limitingthe movement of said valve stem. v

2. A device of the character described, including in combination, aframe having `a closed end with side arms extending upwardly therefrom,a resilient hollow extensile and contractile member having one endsecured to said closed end of the frame, a valve seat member positionedupon and secured tothe upper ends of said side arms, a valve adapted tofit said seat, a valve stem connected to said valve and to the other endof said resilient extensile member, and means within said resilientextensile member for guidingV and lmiting4 the movement of said valvestem, said means including a stationaryshell secured vto they closed endof the frame, a sleeve movably mounted with respect to'said shell andconnected to said valve stem, and means connected to said shell and-said sleeve for guiding and limiting the movement of the sleeve fromsaid resilient extensile member, a valvevv for said valve seat, a. valvestem having an:

adjustable connection with said valve, said valve stem being directlyconnected to one end of said resilient extensile member, and

means within said resilient extensile memberl for guiding and limitingsaid valve stem.

- 4. A device of the'character described, in` cluding in combination, aframe, a resilient hollow extensile and contractile member secured tosaid frame, a valve seat 'member secured to another part of said framespaced from said resilient extensile member, a valve for said valveseat, a valve` stem having'an adjustable connection with said valve,said the movement of valve stem being directly connected to onev end ofsaidresilient extensile member, a stationary guiding member withinsaidresil" ient extensile member, a sleeve connected to said valve stein andslidable with relation to said guiding member, said guiding member andsleeve having meanscooperating to guide and limit the movement of thesleeve and valve stem with relation to the guiding member.

5. A device of the character described, including in combination, aframe, a resilient hollow extensile and contractile member secured tosaid frame, a valve seat member sel cured to another part of said framespaced from said resilient extensile member, a valve for said valveseat, a valve stem having an adjustable connection with said valve, saidvalve stem having a shoulder, a sleeve Within said resilient extensilemember, one end of which.clamps one end of the resilient extensilemember against said shoulder on the valve stem, a stationary guidingmember for said sleeve Within said resilient extensile member, saidguiding member and sleeve having means cooperating to guide and limitthe Vmovement of the sleeve relative to said guiding member.

6. A device of the character described, including in combination, aframe, a resilient hollow extensile and contractile member-secured tosaid frame, a valve seat member secured to another part of said framespaced .from said resilient extensile member, a valve for said valveseat, a Valve stem having an adjustable connection with said valve, saidvalve stem having a shoulder, a sleeve within said resilient extensilemember, one end of which clamps one end of the resilient extensilemember against said shoulder on the valve s'tem, a stationary guidingmember for said sleeve within said resilient extensile member, saidguiding member and sleeve having means cooperating to guide and limit`the movement of the sleeve relative to said guiding member, said meansincluding a slot provided in one of said members and a pin connected tothe other of said members and positioned within said slot so that it isguided thereby and its movement is limited by the ends of the slot.

'l'. A device of the character described, including in combination, aframe having a circular dish-shaped closed end with side arms extendingupwardly therefrom, a valve seat memberhaving an enlarged openingtherethrough secured to the upper ends of said side arms and a valve forsaid valve seat, a resilient hollow extensile and contractile membermounted upon and secured to the,

closed end of said frame, a valve stem lconnected to said valve at oneend and connected at its other end t the other end of said re- V cludingin combination, a frame 'having a circular dish-shaped closed end withside arms extending upwardly therefrom, a valve seat member having anenlarged opening therethrough secured to the upper ends of saidresilient extensile member and con nected to said 'valve stem forguiding and limiting the movement of saidvalve stem, said meansincluding an elongated shell .se-l' cured to the closed end of theframe, a sleeve connected to' one end ofthe valverstem and slidablymounted within the shell,and means on the shell and sleeve cooperatingto guide and limit the movement of the sleeve and its attached valvestem with relation to the shell.

9. A device of the character described, including in combination, aframe havin circular dish-shaped end provided with slde arms extendingupwardly therefrom, a valve seat member having an enlarged openingtherethrough secured to the upper ends of said side arms and a valve forsaid valve seata resilient hollow extensile and contractile memberhaving an open end mounted upon and secured to the dish-shaped end ofthe frame, said dish-shaped end of thezframe being formed with a centralsocket, an elongated guiding shell havin a closed end positioned in saidsocket an extending within said extensile member, a valve stem connectedto said valve at one end and a sleeve slidably mounted within Saidguidin shell and connected to the other end of sai valve stem, saidvalve stem extending into said extensile member and said sleeve servingas means to secure said end of the extensile member to said valve stem.'y 10. In a device of the character described,`

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including in combination, a frame having a circular dish-shaped end withside arms extending upwardly therefrom, said side, arms having arcuateextended portions a't/ their ends `and also having an arcuate lugextending upwardly'7 therefrom, said ldish-shaped end of the frame alsohaving a socket formed therein, a guiding shell secured in said socketand extending upwardly therefrom, a resilient hollow extensile andcontractile member having an open endl mounted upon and secured to saiddish-shaped end of the frame about said socket, a valveseat member ofannular form provided with slots adapted to receive said arcuate lugsand be secured thereby, said valve seat member having an enlargedaperture therethrough with an annular seat projecting therefrom, a discvalve adapted to it said seat, a valve stem for Said` valve having anad]ustable connection at one end thereof, said valve steml having areduced portion at .its other endextendin Within one end of theextensilemember, a s eeve'having a. guided and limited movement with respect tosaid lguiding shell, said sleeve being connected to the reduced end ofthe v alve stem within the hollow extensile member and serving to securethe other end of vsaid extenslile.

member to said valve'stem;

11. A device of the character described including, in combination, aframe, a resilient extensile and contractile member secured at its oneend to the frame, a valve seat member secured to another part oi saidframe'spaced from said resilient extensile member, a valve for saidvalve seat, a valve stem for said valve, a sleevethreadedlyengaging thevalvestem .aid adapted to clamp lthe other end of said Vresilient memberto the valve stem, a, guiding member for said sleeve, said guidingmember and sleeve having means co-o erating to guide and limit themovement o the sleeve described,

relativeto said guiding member. A devicel of the character K includingin combination, a frame, 'a resilient i hollow extensile and contractilemember se- .cured'to said frame, a valve seat memberl secured toanother4 part of said frame; spaced fromsaid resilient extensile member,a valve for said valve seat, a valve stem connected to saidvalve, saidvalve stem being connected l `f to one end of 'said resilient extensilemember,

a stationary guiding member Within said resilient extensile member, asleeve connected to said valve stem and slidable with relation tosaidkguiding member, said guiding member .and `sleeve having meansco-operatin gto' guide and limit the movement of thes eeve and valvestem with relation tothe guiding member, said means including a slotprovidl ed inI saidgulding member and a. pinconnected tol said sleeveand positioned within said slot so that it is guided thereby and itsmovement is limited by the ends of the slot.

In testimony'tliat I claim the foregoing,- I have hereuntov set my handthis 21st day of December,'192f8. 7

i MARSHALL H. WARD.

